CN219739333U - Grounding wire clamp - Google Patents

Abstract

The present disclosure relates to a ground clip, comprising: a body defining a chamber and having a first side portion including a slot and a first aperture, both in communication with the chamber, the first side portion further including a plurality of blind holes disposed about the first aperture; a screw rotatably supported within the chamber; the first clamping jaw is connected with the first side part; the second clamping jaw is arranged opposite to the first clamping jaw and comprises a protruding part protruding towards the cavity through the narrow hole, and the protruding part is sleeved on the screw rod and is in threaded connection with the screw rod; the positioning knob comprises a knob body, a connecting rod and a bolt, wherein the connecting rod is connected with the knob body, the knob body is provided with a through hole, the connecting rod penetrates through the first hole and is connected with the screw rod through a transmission piece, and the bolt can penetrate through the through hole and is accommodated in one of the blind holes. The ground clamp of this disclosure can prevent effectively behind the clamping power failure equipment not hard up.

Description

Grounding wire clamp

Technical Field

The utility model relates to the field of electricity, in particular to a grounding wire clamp.

Background

The grounding wire is an important tool for ensuring the safety of operators and electrical equipment when voltage accidentally appears on equipment which has been powered off. When the electric equipment works, the grounding wires are arranged on the power supply sides which possibly transmit power to the power failure equipment, residual charges on the electric equipment can be brought into the ground to be released, and meanwhile, when power is suddenly supplied, the power switch can be promoted to rapidly trip, and the rise of the voltage of the electric equipment to the ground can be limited. The existing grounding wire generally comprises a grounding end, a conductive clamp, a wire and an insulating rod.

The prior patent with publication number CN205264864U discloses a safety grounding wire clamp of a hydropower station, which comprises an upper clamping plate, a connecting plate, a lower fixed plate and a lower clamping plate positioned between the upper clamping plate and the lower fixed plate; an upper accommodating cavity is formed in the upper clamping plate, an upper reed is arranged on the lower surface of the upper clamping plate, an upper pressure spring is arranged in the upper accommodating cavity, one end of the upper pressure spring is connected with the upper clamping plate, and the other end of the upper pressure spring is connected with the upper reed; a lower accommodating cavity is formed in the lower clamping plate, a lower reed is arranged on the upper surface of the lower clamping plate, a lower pressure spring is arranged in the lower accommodating cavity, one end of the lower pressure spring is connected with the lower clamping plate, and the other end of the lower pressure spring is connected with the lower reed; the lower fixed plate is provided with a threaded hole, the lower fixed plate is connected with the upper clamping plate through a connecting plate, a chute used for the upper and lower movement of the lower clamping plate is arranged in the connecting plate, a screw rod is assembled in the threaded hole, one end of the screw rod is fixedly connected with the lower surface of the lower clamping plate, and the other end of the screw rod is connected with the insulating rod.

Clamping is carried out on power failure equipment through the upper clamping plate and the lower clamping plate in the technology, but the upper clamping plate and the lower clamping plate are provided with pressure springs to provide clamping force for the upper clamping plate and the lower clamping plate, so that unstable clamping on the power failure equipment is easily caused, the clamping plates are easy to loose, the position of the clamping plates is adjusted through the screw in the device, the screw is lack of a limiting mechanism, the looseness is easily caused, and therefore the clamping effect of the device on the power failure equipment is reduced, and the device is obvious and unacceptable.

Disclosure of Invention

In view of the above, the present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the utility model is to propose a ground clip (500) comprising:

-a body (10), the body (10) defining a chamber (101) and having a first side (14), the first side (14) comprising a slot (11) and a first hole (12) communicating with the chamber (101) respectively, the first side (14) further comprising a plurality of blind holes (13) arranged around the first hole (12); -a screw (50), the screw (50) being rotatably supported within the chamber (101); -a first jaw (21), said first jaw (21) being connected to said first side; the second clamping jaw (22), the second clamping jaw (22) arranged opposite to the first clamping jaw (21) comprises a protruding part (221) protruding towards the cavity (101) through the narrow hole (11), and the protruding part (221) is sleeved on the screw (50) and is in threaded connection with the screw (50); the positioning knob (30), the positioning knob (30) comprises a knob body (31), a connecting rod (32) connected with the knob body (30) and a bolt (34), the knob body (34) is provided with a through hole (311), the connecting rod (32) passes through the first hole (12) and is connected with the screw (50) through a transmission piece, and the positioning bolt (34) can pass through the through hole (311) and be accommodated in one blind hole (13) in the blind holes (13); wherein the body (10) and the screw (50) are insulated.

According to the grounding wire clamp (500) provided by the utility model, the first clamping jaw (21) is fixedly connected to the body (10), the second clamping jaw (22) is in threaded connection with the screw (20) and moves along the longitudinal direction of the screw (20) when the screw (20) is driven to rotate by the positioning knob (30), the clamping of an object to be clamped (generally power failure equipment) is realized by controlling the position of the second clamping jaw (22) to change the distance between the two clamping jaws (20), in order to prevent the clamping jaw (20) from loosening after clamping the power failure equipment, the bolt (34) penetrates through the positioning knob (30) and then is embedded into the blind hole (13) of the body (10), the circumferential position of the positioning knob (30) is limited, and further, the clamping jaw (22) is locked. Screw rod and protruding portion form screw-nut pair and provide clamping force for the second clamping jaw, compare with using spring preforming centre gripping power failure equipment, screw-nut pair can effectively prevent because of using the unstable not hard up condition that appears of spring preforming centre gripping, and the bolt setting of first lateral part has restricted the rotation of positioning knob and can avoid not hard up, does benefit to the dynamics that maintains the centre gripping.

In some embodiments, the first clamping jaw (21) and the second clamping jaw (22) comprise respective inwardly recessed clamping surfaces (201), the clamping surfaces (201) of the first clamping jaw (21) and the second clamping jaw (22) are oppositely arranged and define a containing cavity (23), and the inwardly recessed containing cavity (23) is arranged to facilitate clamping of power outage equipment.

In some embodiments, the cross section of the clamping surface (201) is arc-shaped, and the arc-shaped structure is beneficial to clamping power failure equipment with different sizes.

In some embodiments, the clamping surface (201) is coated with a conductive rubber pad (202) to protect the power outage equipment from damaging the appearance and structure of the power outage equipment when clamped by the clamping jaw.

In some embodiments, the screw (50) is connected with a first bevel gear (41), the connecting rod is connected with a second bevel gear (42), the screw (50) and the connecting rod (32) are in transmission through bevel gear meshing, the bevel gear meshing structure is compact, and the transmission efficiency is high.

In some embodiments, the knob body (31) defines a second chamber (312) in communication with the through hole (311), the latch (34) includes a step (342) protruding radially outward, the step (342) is received in the second chamber (312) and slidably coupled to an inner wall (312 a) of the second chamber (312), a step is provided on the latch, the step is defined in the second chamber, and the latch is storable on the knob body.

In some embodiments, the positioning knob (30) further includes an elastic member (35), one end of the elastic member (35) is abutted against the step (341), the other end of the elastic member is abutted against an inner wall (312 a) defining the second chamber (312), the bolt is forced to be accommodated in the blind hole by using the elastic force of the elastic member, and the circumferential rotation of the positioning knob is limited, so that the circumferential positioning of the positioning knob is realized.

In some embodiments, the latch includes a first end (341) and a second end (343) opposite the first end (341), the first end (341) being receivable within the blind bore (13), the second end (343) extending radially outward beyond a first handle portion (343 a) where the first handle portion is disposed to facilitate push-pull of the latch.

In some embodiments, the knob body (31) comprises a second handle part (33) extending along the radial direction, and the second handle part is arranged on the knob body, so that the knob can be rotated conveniently, and the rotation of the knob can be more labor-saving.

In some embodiments, one of the first clamping jaw (21) and the second clamping jaw (22) is insulated, one of the two clamping jaws is conductive when the ground wire is grounded, and the other clamping jaw can be insulated, so that the safety of the device is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Additional features and advantages of the utility model are described in the following description, which explains the utility model in more detail based on embodiments with reference to the drawings.

Fig. 1 is a schematic structural view of a ground clip according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of a ground clip according to an embodiment of the present utility model.

Fig. 3 is an enlarged view of the portion a.

Reference numerals illustrate:

500-a ground clip;

10-body, 101-chamber, 11-slot, 12-through hole, 13-blind hole, 14-right side;

201-clamping surface, 202-conductive rubber pad, 21-upper clamping jaw, 22-lower clamping jaw, 221-protruding part, 23-accommodating cavity;

30-positioning knob, 31-knob body, 311-through hole, 312-chamber, 32-connecting rod, 33-knob handle, 34-plug, 341-left end, 342-step, 343-right end, 343 a-plug handle, 35-elastic member

40-helical gear, 41-screw gear and 42-knob gear;

50-screw;

60-limiting blocks;

70-power outage equipment.

Detailed Description

Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be noted that the terms "upper", "lower", "left", "right", "front", "rear" and the like are used herein for illustrative purposes only and are not limiting of the present utility model.

As shown in fig. 1 and 2, an embodiment of the present utility model provides a ground clip 500, including:

a body 10, the body 10 defining a chamber 101 (as an example of a first chamber) and having a right side 14 (as an example of a first side), the first side 14 including a slot 11 and a first hole 12, both the slot 11 and the through hole 12 (as an example of a first hole) being in communication with the chamber 101, the right side 14 further including a plurality of blind holes 13 disposed around the hole 12, the plurality of blind holes 13 being distributed in a circumferential array centered on the hole 12, the greater the number of blind holes along the circumferential array of holes, the greater the accuracy of the spacing; the screw 50 is rotatably supported in the cavity 101, and bearings can be used for supporting two ends of the screw, so that the smoothness of screw rotation is ensured; an upper jaw 21 (as an example of a first jaw), the upper jaw 21 being connected to the right side portion; a lower jaw 22 (as an example of a second jaw), wherein the lower jaw 22 disposed opposite to the upper jaw 21 includes a protrusion 221 protruding toward the chamber 101 through the slot 11, the protrusion 221 is sleeved on the screw 50 and is in threaded connection with the screw 50, one of the two jaws is connected to the ground wire, in this embodiment, the upper jaw 21 may be grounded, the lower jaw 22 is moved upward by the screw, or the lower jaw may be connected to the ground wire; the positioning knob 30, the positioning knob 30 includes a knob body 31, a connecting rod 32 connected with the knob body 30, and a plug 34, the connecting rod 32 passes through the hole 12 and is connected with the screw 50 through a transmission member to drive the screw to rotate, the rotating knob connecting rod 32 rotates, the knob body 34 is provided with a through hole 311 penetrating through the knob body, and the positioning plug 34 can pass through the through hole 311 and be accommodated in one of the blind holes 13. When the grounding clamp 500 clamps power-off equipment, the clamping jaw is connected with the ground wire, the equipment can be grounded only by conducting the clamping jaw, the rest part is required to be subjected to insulation treatment to ensure safety, insulating materials can be coated or wrapped on the body or the screw rod, the body and the screw rod can be manufactured by adopting the insulating materials, the body 10 and the screw rod 50 are subjected to insulation treatment, or the body and the screw rod are ensured to be insulated and not to be conducted by other means, the body and the screw rod are in direct contact with the clamping jaw, the positioning knob is not required to be subjected to insulation treatment, one of the upper clamping jaw 21 and the lower clamping jaw 22 is also required to be insulated, and the exposed part of the clamping jaw connected with the ground wire is also required to be subjected to insulation treatment on the premise of ensuring the connection of the ground wire, so that the safety of the device is improved.

The utility model provides a pair of ground clamp, threaded connection forms the screw-nut pair between screw rod 50 and the protruding portion 221, and the screw rod rotationally sets up in the cavity 101 of body, and right side 14 is connected with rotatable positioning knob 30, is connected through the driving medium between positioning knob 30 and the screw rod, rotates positioning knob 30, can drive screw rod 50 rotation, and upper clamping jaw 21 is fixed, and lower clamping jaw 22 upwards moves, presss from both sides tight power failure equipment. Still offered hole 311 on the positioning knob, the right side portion corresponds hole 311 position department and offers a plurality of blind holes, the blind hole is the positioning knob rotation in-process hole 311 and the position that right side portion corresponds, and a plurality of blind holes 13 use hole 12 as the centre of a circle promptly and are circumference array, and clamping jaw 20 presss from both sides tight power failure equipment back, and bolt 34 passes hole 311 entering blind hole 13, and the bolt part is held in the blind hole, and the part is held in hole 311, can restrict the circumferential position of positioning knob, realizes the spacing of ground clamp.

As shown in the cross-sectional view of the ground clip in fig. 2, the upper clamping jaw 21 and the lower clamping jaw 22 include respective clamping surfaces 201 that are recessed inward, and during clamping, the opposite clamping surfaces 201 of the upper clamping jaw 21 and the lower clamping jaw 22 define a receiving cavity 23, the power outage device 70 is placed in the receiving cavity 23, the distance between the upper clamping jaw and the lower clamping jaw is changed, and when the distance between the clamping jaws is smaller than or equal to the external dimension of the power outage device, the clamping can be achieved. The cross-section of clamping face 201 is the arc, sets the clamping face into the arc and adapts to not unidimensional power failure equipment simultaneously, and when the cross-section of power failure equipment was the circular arc, clamping jaw and power failure equipment contact surface were the cambered surface, and when power failure equipment was the irregular object, then every clamping jaw had two at least clamping points, but furthest's assurance clamping strength and effect like this. The clamping surface 201 is coated with the conductive rubber pad 202, because the clamping jaw needs to be conductive, the clamping jaw is made of metal, the surface hardness is high, scratch and crush injury can be caused to the clamped surface of the power failure equipment under the action of the strong locking force, and the appearance of the power failure equipment can be effectively protected by arranging the conductive rubber pad.

The screw 50 is in meshed transmission connection with the connecting rod 32 through the bevel gears, in the embodiment, the connecting rod is perpendicular to the screw, one of the bevel gears meshed with the screw is sleeved on the screw to drive the screw to rotate, the other bevel gear is arranged at the left end of the connecting rod 32, and when the knob body is rotated, the connecting rod rotates and transmits rotation to the screw through the bevel gear, so that the gear transmission efficiency is high, and the bevel gear is favorable for compact structure and reduced device size.

As shown in fig. 3, the knob body 31 defines a chamber 312 (as an example of a second chamber) communicating with the through hole 311, the latch 34 includes a step 342 protruding radially outward, the step 342 is accommodated in the chamber 312 and slidably connected to an inner wall 312a of the chamber 312, the step 342 is accommodated in the chamber 312, the step 342 slides in the chamber 312, and the latch 34 is not separated from the positioning knob even if inserted into a blind hole, thereby functioning as a storage for the latch.

The positioning knob 30 further comprises an elastic member 35, one end of the elastic member 35 abuts against the step 341, the other end of the elastic member abuts against the inner wall 312a defining the second cavity 312, one end of the bolt is tightly pressed in the blind hole by the elastic force of the elastic member, the bolt is prevented from falling out of the blind hole, a limiting block 60 is further arranged in the cavity 101, and the limiting block 60 is used for penetrating through the connecting rod and limiting the position of the connecting rod.

The plug comprises a first end 341 and a second end 343 opposite to the first end 341, the first end 341 can be accommodated in the blind hole 13, the second end 343 extends out of the first handle 343a along the radial direction, the plug end is cylindrical, and the handle is arranged to facilitate grabbing the plug, so that convenience and trouble saving are realized. The knob body 31 includes a second handle portion 33 extending in a radial direction, and the handle is provided to facilitate rotation of the positioning knob, which is convenient and trouble-free.

The working process of the grounding wire clamp provided by the embodiment of the utility model is described as follows:

when the grounding wire clamp is used, if the accommodating cavity 23 between the upper clamping jaw and the lower clamping jaw is too small, the positioning knob is required to be rotated to downwards move the lower clamping jaw, so that the power failure equipment 70 can be placed in the accommodating cavity 23, when the accommodating cavity 23 is enough for placing the power failure equipment, the power failure equipment 70 is placed in the accommodating cavity, then the positioning knob 30 is rotated to upwards move the lower clamping jaw until the upper clamping jaw and the lower clamping jaw clamp the power failure equipment, and the bolt 34 is inserted into the blind hole 13 at the corresponding position, so that the self-locking limit of the clamping device is realized.

Therefore, according to the ground wire clamp 500 provided by the utility model, the defects that the wire clamp is easy to loosen and cannot limit and self-lock after the power failure equipment is clamped by the ground wire clamp using the spring pressing plate are overcome, the screw-nut pair is utilized to provide clamping force for the clamping jaw, the bolt is further increased to ensure that the connection between the screw-nuts cannot be reversed, and the ground wire clamp 500 is compact in structure and strong in clamping force.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model.

In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, one skilled in the art can combine and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A ground clip (500), comprising:

-a body (10), the body (10) defining a chamber (101) and having a first side (14), the first side (14) comprising a slot (11) and a first hole (12), both the slot (11) and the first hole (12) being in communication with the chamber (101), the first side (14) further comprising a plurality of blind holes (13) arranged around the first hole (12);

-a screw (50), the screw (50) being rotatably supported within the chamber (101);

-a first jaw (21), said first jaw (21) being connected to said first side;

the second clamping jaw (22), the second clamping jaw (22) arranged opposite to the first clamping jaw (21) comprises a protruding part (221) protruding towards the cavity (101) through the narrow hole (11), and the protruding part (221) is sleeved on the screw (50) and is in threaded connection with the screw (50);

the positioning knob (30), the positioning knob (30) comprises a knob body (31), a connecting rod (32) connected with the knob body (31) and a bolt (34), the connecting rod (32) passes through the first hole (12) and is connected with the screw (50) through a transmission piece, the knob body (31) is provided with a through hole (311), and the bolt (34) can pass through the through hole (311) and be accommodated in one blind hole (13) in the blind holes (13);

wherein the body (10) and the screw (50) are insulated.

2. The ground clamp (500) of claim 1, characterized in that the first jaw (21) and the second jaw (22) comprise respective inwardly recessed clamping surfaces (201), the clamping surfaces (201) of the first jaw (21) and the second jaw (22) being oppositely disposed and defining a receiving cavity (23).

3. The ground clip (500) of claim 2, wherein the clamping surface (201) is arcuate in cross-section.

4. A ground clip (500) according to claim 3, characterized in that the clamping surface (201) is covered with a conductive rubber pad (202).

5. The ground clamp (500) of claim 1, wherein the screw (50) is connected with a first bevel gear (41), the connecting rod is connected with a second bevel gear (42), and the screw (50) and the connecting rod (32) are in transmission through bevel gear engagement.

6. The ground clip (500) of claim 1, characterized in that the knob body (31) defines a second chamber (312) in communication with the through hole (311), the latch (34) comprising a step (342) protruding radially outwards, the step (342) being housed within the second chamber (312) and being slidingly connected with an inner wall (312 a) of the second chamber (312).

7. The ground clip (500) of claim 6, characterized in that the positioning knob (30) further comprises an elastic member (35), one end of the elastic member (35) being abutted against the step (342) and the other end being abutted against an inner wall (312 a) defining the second chamber (312).

8. The ground clip (500) of claim 7, characterized in that the latch includes a first end (341) and a second end (343) opposite the first end (341), the first end (341) being receivable within the blind bore (13), the second end (343) extending radially outward beyond the first handle portion (343 a).

9. The ground clip (500) of claim 8, characterized in that the knob body (31) comprises a radially extending second handle portion (33).

10. The ground clip (500) of claim 1, wherein one of the first jaw (21) and the second jaw (22) is insulated.